It is the country's worst work-safety accident in over two years

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In this photo released by Xinhua News Agency, rescue workers look for survivors after a work platform collapsed at the Fengcheng power plant in eastern China's Jiangxi Province, Nov. 24, 2016. State media reported dozens were killed after the scaffolding tumbled down.

The death toll from the collapse of scaffolding at a construction site in eastern China rose to 74, state media said Friday, in the country's worst work-safety accident in over two years.

Two others were injured after the work platform at a power plant cooling tower that was under construction collapsed Thursday, sending iron pipes, steel bars and wooden planks tumbling down on the workers, the official Xinhua news agency reported.

The cooling tower was being built in the city of Fengcheng in Jiangxi province when the scaffolding tumbled down, an official with the local Work Safety Administration who would only give his surname, Yuan, said by telephone.

About 500 rescue workers, including paramilitary police officers, dug through the debris with their hands, according to state broadcaster CCTV. It showed debris strewn across the floor of the cavernous, 165-meter (545-foot) -high concrete cooling tower, in the middle of which stood an unfinished structure.

Chinese President Xi Jinping urged local governments to learn from the accident and hold those responsible accountable. He said that in the wake of recent work accidents, the State Council, China's Cabinet, should carry out thorough inspections of work sites to reduce risks.

China has suffered several major work-safety accidents in recent years blamed on weak regulatory oversight, systemic corruption and pressure to boost production amid a slowing economy.

The scaffolding accident happened the same day that Yang Dongliang, a former head of the State Administration of Work Safety, stood trial in a Beijing court for allegedly accepting $4.3 million in bribes between 2002 and last year, as he rose through the ranks as an official in Tianjin before joining the regulatory agency.

Yang was sacked in August 2015 in connection with a massive explosion at an illegal chemical warehouse in the northern port of Tianjin that killed 173 people, most of them firefighters and police officers. The head of a logistics company was given a suspended death sentence over the case.

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Earlier this month, 33 miners were killed in a gas explosion at a coal mine in Chongqing in China's southwest. In 2014, a dust explosion at a metal production workshop killed 146 people.

Other accidents blamed on lax safety standards in recent years have also caused significant fatalities.

In June 2015, 442 people were killed in the capsize on the Yangtze River of a modified cruise ship blamed on poor decisions made by the captain and crew, while 81 people were killed in December when an enormous, man-made mountain of soil and waste collapsed on nearly three dozen buildings in the southern manufacturing center of Shenzhen.

Construction of the 1,000-megawatt coal-fired power plant at the center of Thursday's accident began in Fengcheng in late 2015 and was expected to be finished in November 2017. Provincial officials held a televised news conference late Thursday at which they bowed to express condolences to the workers' families.

Beijing has vowed to solve a looming problem of power oversupply and cap greenhouse gas emissions in the medium term, but economic planners said earlier in November they intend to boost coal power generation capacity by a fifth over the next five years, or the equivalent output of hundreds of new coal-fired plants.